Energy calculations: work and power Flashcards
(6 cards)
1
Q
Work equation (with units)
A
Work (Joules (J)) = force (newtons(N)) x distance moved in the direction of the force (Meters(m))
2
Q
Moment equation
A
moment = force x perpendicular distance
3
Q
What happens if something is held in place?
A
no work is done, but energy is used
4
Q
Weight equation
A
Weight = mass x gravitational field strength
5
Q
What is power?
A
The rate of work done. The energy transferred per second.
6
Q
Power equation (with units)
A
Power (Watts) = work (Joules)/ time taken (seconds)
